[GRASS-user] Looking for a Grass equivalent to ESRI's Focalmean(grid, ANNULUS, irad, orad)

Brad Douglas rez at touchofmadness.com
Wed Aug 29 19:55:27 EDT 2007

On Wed, 2007-08-29 at 15:07 -0700, Moskovitz, Bob wrote:
> Hello Grassuser,
> I am looking for a Grass equivalent to Focalmean(grid, ANNULUS, irad,
> orad) (info at
> http://edndoc.esri.com/arcobjects/9.2/NET/shared/geoprocessing/spatial_analyst_tools/focalmean.htm).  What I ultimately want to do is calculate Topographic Position Index (info at http://www.jennessent.com/downloads/TPI-poster-TNC_18x22.pdf).


Brad Douglas <rez touchofmadness com>                    KB8UYR/6
Address: 37.493,-121.924 / WGS84    National Map Corps #TNMC-3785

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